<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      h1 {
        font-size: 12px;
        transform: scale(0.75);
        transform-origin: left top;
      }
    </style>
  </head>
  <body>
    <p>123</p>
    <h1>您好呀</h1><span>2222</span>
    <p>456</p>
  </body>
</html>
